From: Roberto Sassu <roberto.sassu@huawei.com>
To: <zohar@linux.ibm.com>, <gregkh@linuxfoundation.org>,
<mchehab+huawei@kernel.org>
Cc: <linux-integrity@vger.kernel.org>,
<linux-security-module@vger.kernel.org>,
<linux-doc@vger.kernel.org>, <linux-kselftest@vger.kernel.org>,
<linux-kernel@vger.kernel.org>,
Roberto Sassu <roberto.sassu@huawei.com>
Subject: [RFC][PATCH v2 08/12] diglim: Interfaces - digest_label
Date: Mon, 26 Jul 2021 18:36:56 +0200 [thread overview]
Message-ID: <20210726163700.2092768-9-roberto.sassu@huawei.com> (raw)
In-Reply-To: <20210726163700.2092768-1-roberto.sassu@huawei.com>
Introduce the digest_label interface. It can be used to set a label to be
applied to the next digest list (buffer) loaded through digest_list_add.
Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com>
---
security/integrity/diglim/fs.c | 40 ++++++++++++++++++++++++++++++++++
1 file changed, 40 insertions(+)
diff --git a/security/integrity/diglim/fs.c b/security/integrity/diglim/fs.c
index caf2923c9146..8958e987f708 100644
--- a/security/integrity/diglim/fs.c
+++ b/security/integrity/diglim/fs.c
@@ -36,6 +36,13 @@ static struct dentry *diglim_dir;
* removed.
*/
static struct dentry *digest_lists_loaded_dir;
+/**
+ * DOC: digest_label
+ *
+ * digest_label can be used to set a label to be applied to the next digest
+ * list (buffer) loaded through digest_list_add.
+ */
+static struct dentry *digest_label_dentry;
/**
* DOC: digest_list_add
*
@@ -505,6 +512,32 @@ static const struct file_operations digest_list_upload_ops = {
.llseek = generic_file_llseek,
};
+/*
+ * digest_label_write: write label for next uploaded digest list.
+ */
+static ssize_t digest_label_write(struct file *file, const char __user *buf,
+ size_t datalen, loff_t *ppos)
+{
+ int rc;
+
+ if (datalen >= sizeof(digest_label))
+ return -EINVAL;
+
+ rc = copy_from_user(digest_label, buf, datalen);
+ if (rc)
+ return -EFAULT;
+
+ digest_label[datalen] = '\0';
+ return datalen;
+}
+
+static const struct file_operations digest_label_ops = {
+ .open = generic_file_open,
+ .write = digest_label_write,
+ .read = seq_read,
+ .llseek = generic_file_llseek,
+};
+
static int __init diglim_fs_init(void)
{
diglim_dir = securityfs_create_dir("diglim", integrity_dir);
@@ -528,8 +561,15 @@ static int __init diglim_fs_init(void)
if (IS_ERR(digest_list_del_dentry))
goto out;
+ digest_label_dentry = securityfs_create_file("digest_label", 0600,
+ diglim_dir, NULL,
+ &digest_label_ops);
+ if (IS_ERR(digest_label_dentry))
+ goto out;
+
return 0;
out:
+ securityfs_remove(digest_label_dentry);
securityfs_remove(digest_list_del_dentry);
securityfs_remove(digest_list_add_dentry);
securityfs_remove(digest_lists_loaded_dir);
--
2.25.1
next prev parent reply other threads:[~2021-07-26 16:40 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-26 16:36 [RFC][PATCH v2 00/12] integrity: Introduce DIGLIM Roberto Sassu
2021-07-26 16:36 ` [RFC][PATCH v2 01/12] diglim: Overview Roberto Sassu
2021-07-28 11:10 ` Mauro Carvalho Chehab
2021-07-28 11:40 ` Roberto Sassu
2021-07-26 16:36 ` [RFC][PATCH v2 02/12] diglim: Basic definitions Roberto Sassu
2021-07-27 14:43 ` Greg KH
2021-07-27 15:35 ` Roberto Sassu
2021-07-27 15:44 ` Greg KH
2021-07-27 16:09 ` Roberto Sassu
2021-07-27 16:13 ` Greg KH
2021-07-28 6:59 ` Roberto Sassu
2021-07-28 11:31 ` Mauro Carvalho Chehab
2021-07-28 11:45 ` Roberto Sassu
2021-07-28 13:08 ` Mauro Carvalho Chehab
2021-07-28 13:47 ` Roberto Sassu
2021-07-26 16:36 ` [RFC][PATCH v2 03/12] diglim: Objects Roberto Sassu
2021-07-28 11:38 ` Mauro Carvalho Chehab
2021-07-28 11:47 ` Roberto Sassu
2021-07-26 16:36 ` [RFC][PATCH v2 04/12] diglim: Methods Roberto Sassu
2021-07-28 12:18 ` Mauro Carvalho Chehab
2021-07-28 12:30 ` Roberto Sassu
2021-07-26 16:36 ` [RFC][PATCH v2 05/12] diglim: Parser Roberto Sassu
2021-07-28 12:35 ` Mauro Carvalho Chehab
2021-07-26 16:36 ` [RFC][PATCH v2 06/12] diglim: Interfaces - digest_list_add, digest_list_del Roberto Sassu
2021-07-28 12:38 ` Mauro Carvalho Chehab
2021-07-29 21:20 ` Mimi Zohar
2021-07-30 7:16 ` Roberto Sassu
2021-07-30 12:39 ` Mimi Zohar
2021-07-30 13:16 ` Roberto Sassu
2021-07-30 14:03 ` Mimi Zohar
2021-07-30 14:24 ` Roberto Sassu
2021-08-02 8:14 ` Roberto Sassu
2021-08-02 15:01 ` Mimi Zohar
2021-08-02 14:42 ` Mimi Zohar
2021-08-02 15:12 ` Roberto Sassu
2021-08-02 16:54 ` Roberto Sassu
2021-08-05 15:38 ` Mimi Zohar
2021-08-05 17:04 ` Roberto Sassu
2021-07-26 16:36 ` [RFC][PATCH v2 07/12] diglim: Interfaces - digest_lists_loaded Roberto Sassu
2021-07-26 16:36 ` Roberto Sassu [this message]
2021-07-26 16:36 ` [RFC][PATCH v2 09/12] diglim: Interfaces - digest_query Roberto Sassu
2021-07-26 16:36 ` [RFC][PATCH v2 10/12] diglim: Interfaces - digests_count Roberto Sassu
2021-07-28 12:45 ` Mauro Carvalho Chehab
2021-07-26 16:36 ` [RFC][PATCH v2 11/12] diglim: Remote Attestation Roberto Sassu
2021-07-28 12:47 ` Mauro Carvalho Chehab
2021-07-28 12:54 ` Roberto Sassu
2021-07-26 16:37 ` [RFC][PATCH v2 12/12] diglim: Tests Roberto Sassu
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